Decided to revolutionise my chain maintenance regime as I seem to have been using the world's stickiest oil - chain, RD, rings and cassette are caked with black gunge, though TBH my shifts are fine so I was tempted to leave well alone.
First task was to try to find the quicklink under the black gunge.
That done, my next instinct was to Google for a new chain from a local supplier, as I couldn't face cleaning it, but the Scot in me balked at paying 8 quid for something that might not be necessary, so it was out with the degreaser and toothbrush. After an overnight soak and a good scrub, it was clean enough to do a wear check, only a couple of percent elongation so good enough for a few hundred miles more. Obviously I didn't then stick it in the dishwasher to finish the cleaning process, rinse it out and then 10 minutes in the oven at 50C to dry it out. Oh no.
With a chain that I could eat my lunch off now, time to look at the rest of the transmission. It was clear that both the chainrings and cassette were going to have to come off to clean them properly. I couldn't face taking the crank off, so I made do with undoing the spider bolts so I could get two of my triple rings off, and just cleaned the granny ring in situ. I'd had my SRAM 8-speed cassette off before, so I knew that I could split it into individual cogs which made cleaning it a lot easier.
With everything spotless and reassembled, I reached for my newly-acquired bottle of ProGold and pondered how to apply it. After experimenting with a syringe (without a needle) and getting most of it on the floor, I settled on a paintbrush to apply the ProGold individually to each link followed by a final wipe to remove any excess.
A quick ride around the block confirmed that everything was working smoothly, not sure if it was my imagination but pedalling seemed marginally easier now I'm not shifting all that crud around. Riding to the pub later, so we'll see if it's still easy on the way back uphill after a couple of pints.